Electric wall-switch



Patented Feb. 1, 1921.

FIELL 3 nuamIioz UNITE STAT S PATENT OFFICE.

WILLIAM J. nnw'roiv, or tynsaoox, NEW Yoax, Assmuoa, BY MESNE ASSIGN-nnn'rs, '10 JOHN G. mvmesrou, or woonnnan, LONG ISLAND, NEW YORK.

nnnc'rnrc wALL-swmcn.

Specification of Letters Patent.

Patented Feb. 1, 1921.

Application filed,December 5, 1916. Seriai No. 135,136.

I aim to provide a switch of the toggle or lever type, which will bepositive in ts operation and will break the contact with great rapidity,while at the same time it is of the greatest simplicity, contains thefewest possible number of parts and is, therefore, inexpensive tomanufacture. As an example of the simplicity of my improved switch, Iwill cite the fact that 1t contains only four moving parts, and that twoof said parts are oscillating parts, pivoted upon a common support.

In the draw ngs, Figure 1 is a plan view of my improved switch. Fig. 2is a sectional view thereof, taken on the line 2-2. Flg. 3 is asectional view taken on the line 3-3, and Fig. 4 is a view of a cover,adapted for use with my improved mechanism.

My improved switch comprises a base 1 of insulatingmaterial, which maybe porcelain, molded insulation or other suitable material, upon whichis mounted a bridge plate 2, screwed to the base by means of screws 3-3,and apertured at 2 1. Bridge 2 is bent upwardly in the form of aninverted U, the opposite legs of which are traversed by .a pin 4, whichcarries the manual operating handle 5, pivotally mounted thereon. The,

opposite legs 22 of the U shaped bridge 2 are also pierced to provide abearing 21 for the ends of a U shaped blade carrier 6.

Blade carrier 6 is provided with an up wardly extending projection 7(see Fig. 2), upon which is mounted a horizontally disposed U shapedswitch blade 8,wh1ch is supported from the 'blade carrier by suitableinsulation 9. g

The blade member 8 is preferably made of some spring metal, such asbrass, so that the ends thereof tend to be sprung away from one another,in order to produce a positive contact with contact plates 10-10.

Contact plates 10-10 are mounted upon insulating base 1, by means ofscrews 11-11, which may be used as binding posts or terminal screws forthe supply wires. Contact plates 10 are bent downwardly into an aperture12, formed in the base plate 1,-so as to be securely supported by thebase plate in their proper positions, and to, make contact with the Ushaped switch blade 8. Holes 13-13 are provided in the insulating basefor the supply wires.

, Extending between the blade carrier 6 and the operating handle 5, is aswitch operating rod 14:. Said rod 14 is attached to the operatinghandle 5, by a pin and slot connection at 15, and passes through anaperture in the U shaped switch blade carrier 6. A spring 16 surroundsthe switch operating rod 14 and is held in compression between the bladecarrier 6 and shoulders or other suitable stop 17 formed or mounted uponoperating rod 14.

. In order to eliminate the necessity for stops for the operatingmechanism, and thereby to simplify the apparatus, aperture 12 of thebase 1 is soiormed that the switch carrier 6, when the switch is movedto the open position, brings up against the wall of aperture 12, asshown in the dotted lines of Fig. 2. In order toarrest the movement ofthe blade carrier in the closed position,

a stop or shoulder 18 is formed upon one or both of the upstanding legsof the bridge 2.

Fi 4: shows the simple type of cover whic maIy be used with my improvedswitch. t consists of a spun shell, which fits tightly over the shoulder19 of the base 1, and is provided with an aperture, throu h which theoperating handle passes. y reason of the compact arrangement of myimproved switch mechanism, it is possible to use a circular cover ofthis type, which may be sprung over the insulating base and re-.

6. This produces a compression of spring 16 until'the pivot 15 haspassed through, a line drawn between pivot 4 and the aperture in thelowermost portion of blade carrier 6. Up to this point the effect of theincreased compression of the spring has been to hold the blade carrier 6in the closed position, but as soon as this position is passed, theeffort of the spring is exerted in the opposite direction and the switchopens quickly, its movement being arrested by the wall of aperture 12,in the base 1.

While I have only shown one example of my improved switch, I do not wishto be confined thereto, as it will be evident to those skilled in theart, that many modifications may be made, without departing from thespirit of my invention.

I claim- 1. An electric switch, comprising a U shaped bridge, having anaperture and two spaced legs, an oscillating operating handle passingthrough the aperture, and pivoted upon said spaced legs, a U shapedcarrier also pivoted between said legs, and having an'aperture at itslowermost part and an operating rod passing through said aperture in thecarrier, and connected to said handle.

2. An electric switch, comprising a base, an apertured U shapedbridge,an operating handle pivoted on the legs of the bridge and passingthrough the aperture, :1 spring. and a carrier operable by said springand containing the same and also pix'oted upon said bridge.

In testimony whereof, I have signed my name to this specification this4th day of December, 1916.

WILLIAM J. NEWTON.

